<type>jsonb</> data is subject to the same concurrency control

considerations as any other datatype when stored in a table.

Although storing large documents is practicable, in order to ensure

correct behavior row-level locks are, quite naturally,aquired as

correct behavior row-level locks are, quite naturally,acquired as

rows are updated. Consider keeping <type>jsonb</> documents at a

manageable size in order to decrease lock contention among updating

transactions. Ideally, <type>jsonb</> documents should each